Woodbridge Twp., NJ · PWSID NJ1225001
Middlesex Water Company lead service lines
2,562 lead or galvanized lines to replace
Middlesex Water Company reported 3 lead and 2,559 galvanized-requiring-replacement service lines out of 62,200 in its inventory. That's about 1 in 24 lines. Another 568 (0.9%) are still listed as unknown material.
Ranks #11 of 240 New Jersey systems with confirmed lead lines, and #186 nationally.
4.1% of Middlesex Water Company's service lines are lead or galvanized requiring replacement. That's about the same as the New Jersey average (4.5%) and higher than the national average (3.1%).
- Lead <0.1%
- Galvanized (replace) 4.1%
- Unknown 0.9%
- Non-lead 95%
Total service lines reported: 62,200. Reported all required service line types. Population served: 233,376; 58,344 connections.
Lead test results
Middlesex Water Company's most recent 90th-percentile lead result (Jan 2026–Jun 2026) was 0.9 ppb, below both the 15 ppb action level and the 10 ppb level that takes effect in 2027. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 2,012 in 2025 Q1 to 2,562 in 2026 Q3: up 550 (27%). Lines of unknown material went from 18,797 to 568, down 18,229 (97%).
Quarterly counts reported to EPA. A drop usually means lines were replaced or confirmed non-lead; a rise usually means more lines were identified. Replacement progress rankings.
Lead rule violations
EPA's data lists 7 Lead and Copper Rule violations since 2015, 1 health-based for Middlesex Water Company. Health-based violations are treatment failures, such as corrosion control or public education; the rest are missed monitoring or reporting.
| Began | Violation | Status |
|---|---|---|
| Apr 2023 | Lead consumer notice not delivered or reported | Returned to compliance |
| Jan 2022 | Missed water quality parameter monitoring | Returned to compliance |
| Jul 2020 | Missed water quality parameter monitoring | Closed |
| Jul 2019 | Water quality parameters out of range health-based | Returned to compliance |
| Oct 2018 | Missed follow-up or routine lead and copper tap sampling | Returned to compliance |
| Jul 2017 | Missed water quality parameter monitoring | Returned to compliance |
| Jan 2017 | Missed water quality parameter monitoring | Returned to compliance |
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Middlesex Water Company's main water source is surface water (rivers, lakes or reservoirs). It buys treated water from NJ American Water - Raritan, Sayreville W Dept. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Middlesex Water Company is responsible for its own service line inventory and replacement program. It sells water to 9 other water systems: East Brunswick Water Utility, Edison Water Co, Highland Park W Dept, Old Bridge Mua, Perth Amboy Water Department, Sayreville W Dept, Marlboro Township Water Utility Division, NJ American Water - Raritan, Rahway Water Department.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Middlesex Water Company whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Middlesex County
Cities served
ZIP codes served
ZIP codes whose center falls inside Middlesex Water Company's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
070010700807064070670707707095088200883008832088370884008863
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| New Brunswick W Dept | 370 | 2,481 |
| Perth Amboy Water Department | 852 | 4,460 |
| East Brunswick Water Utility | 159 | 1,420 |
| Sayreville W Dept | 197 | 6,141 |
| Highland Park W Dept | 72 | 3 |
| Matawan Borough Water de | 144 | 454 |
| Spotswood W Dept | 53 | 2,808 |
| Milltown W Dept | 59 | 615 |
Check another water system
Questions
Does Middlesex Water Company have lead pipes?
Yes. Middlesex Water Company reported 3 lead service lines and 2,559 galvanized lines that must be replaced, out of 62,200 total. 568 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on Middlesex Water Company's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will Middlesex Water Company replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has Middlesex Water Company had lead violations?
EPA's data shows 7 Lead and Copper Rule violations since 2015, 1 health-based for Middlesex Water Company.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "Middlesex Water Company lead service lines," https://leadpipemap.com/nj/middlesex-water-company/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.